We admit, it's not the easiest place to find—the entrance is through an unmarked door on a bland residential street in Menilmontant. But once you do (hint: look for the velvet rope) and take the elevator seven floors up, you'll be rewarded with 360-degree views of Paris from the sprawling rooftop. You can sit at communal picnic tables or lounge on comfy sofas, but get there early (it opens at 6 p.m. weekdays) or late to ensure a seat. Beer and wine are your best bets. There is also a restaurant one floor below.